Translate, “An adversary (the abruptness produces a startling effect)! and that too, from every side of the land.” So in the fulfillment, 2Ki 17:5 : “The king of Assyria (Shalmaneser) came up throughout all the land, and went up to Samaria, and besieged it three years.”
bring down thy strength from thee - that is, bring thee down from thy strength (the strength on which thou didst boast thyself): all thy resources (Pro 10:15).
palaces shall be spoiled - a just retribution in kind (Amo 3:10). The palaces in which spoils of robbery were stored up, “shall be spoiled.”